Homework question 4B.13
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Homework question 4B.13
for part B of this homework question, I keep calculating a different answer than what is on the solutions manual. For my calculation for work i am getting W= -3.18 , while the solutions manual is w= -326. I do not get why that is the solution on the manual if all our work is the same. Is this an error on the manual or my calculations?
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Re: Homework question 4B.13
Pretty sure the manual's solution is correct. Did you use w=-nRTln(V2/V1)? Or maybe make sure you're using the right units?
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Re: Homework question 4B.13
Make sure you use the correct gas constant. You probably used the 0.82 atm.L/mol.K, which got you the value that you have. Use 8.3145 J/mol.K and you should get the answer from the manual.
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Re: Homework question 4B.13
I think the manual is correct. You first find the moles of gas with the ideal gas law (PV = nRT). Then you use the formula w = -nRTln(V2/V1) and you use the gas constant 8.3145 J/K•mol. You should then get -326J.
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Re: Homework question 4B.13
I don’t think there’s an error in the manual. w=-nRTln(V2/V1) is the formula you should be using.
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Re: Homework question 4B.13
The solution manual is correct on this one. Something that tripped me up is units and converting between J and kJ in the appropriate places.
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